It has been 20 years since West Nile virus first emerged in the Americas, and since then,
little progress has been made to control outbreaks caused by this virus. After its first …

West Nile virus (WNV) was first detected in North America in 1999 during an outbreak of
encephalitis in New York City. Since then the virus has spread across North America and …

Studies examining the evolution of West Nile virus since its introduction into North America
have identified the emergence of a new dominant genotype (WN02) that has displaced the …

Brazil is a large tropical country (8,514,215 km²) with 185,360,000 inhabitants. More than
one third of its territory is covered by tropical forests or other natural ecosystems. These …

WESт NILE IRUS (WNV) was introduced into the western hemisphere in 1999 near New
York City, where it caused substantial mortality in corvids and a small number of human …

West Nile Virus Isolation from Equines in Argentina, 2006 - PMC Back to Top Skip to main
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West Nile virus (WNV) is a flavivirus that is maintained in a bird–mosquito transmission
cycle. Humans, horses and other non-avian vertebrates are usually incidental hosts, but …

The distribution of West Nile virus (WNV) is dependent on the occurrence of both susceptible
avian reservoir hosts and competent mosquito vectors. Both factors can be influenced by …

Despite evidence of West Nile virus (WNV) activity in Colombia, Venezuela and Argentina,
this virus has not been reported in most South American countries. In February 2009, we …

As part of our ongoing surveillance efforts for West Nile virus (WNV) in the Yucatan
Peninsula of Mexico, 96,687 mosquitoes collected from January through December 2007 …